pH / EC Calibration & Cleaning
Calibration and cleaning is important to getting the pH and strength of a nutrient solution correct and in turn, essential for hydroponic growing. Probe cleaner, buffer and conductivity standard help get the best out of your pH instruments.
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Bluelab EC Probe Care Kit£10.95
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Growth Technology Conductivity Standard
Starting at: £3.49
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Growth Technology pH Buffer 4 & 7
Starting at: £3.10